Mason Jar Mud Pie - www.thelilypadcottage.com Just smash a bunch of Oreos in a ziploc bag, sprinkle the cookie crumbs in the bottom of the mason jar. Then layer coffee ice cream, hot fudge, more ice cream, whip cream and finally top with more Oreos. Easy right? You can make these ahead of time and freeze them, just leave the whip cream off and add it right before you are ready to serve.